Software development
Smart, Scalable & Future-Proof Software Solutions
Our developers are experts in creating robust and scalable software solutions. Whether you’re looking to develop a new application or improve an existing one, we offer tailor-made solutions that perfectly align with your business needs.
Your Partner in Software and Mobile App Development
At GMU, we understand that the world of technology is constantly evolving. That’s why we offer top-quality software and mobile app development services to help your business grow and innovate.
Custom Software Solutions
We build tailored software that fits your business like a glove — designed to solve your specific challenges and scale with your goals.
Seamless System Integrations
From CRMs to ERPs, we connect your existing tools into one smooth ecosystem — ensuring optimal efficiency and data flow.
Scalable & Future-Proof Architecture
Our solutions are built to grow with you. Flexible, modular codebases that adapt to your evolving business — without needing a rebuild.
Security-First Development
We prioritize safety at every step. From secure code practices to regular audits, your data and users are protected by default.
Tech Meets Strategy
We don’t just build. We advise. As a marketing-driven agency, we align your software with your brand, your audience, and your bottom line.
Mobile App Development
Transforming Business with Next-Gen Mobile Apps
C# / .NET Development
Our C# and .NET developers have years of experience building powerful and efficient applications. With their in-depth knowledge of the .NET framework, they can quickly and effectively develop solutions that meet the highest standards.
PHP Development
For dynamic and interactive web applications, PHP is an excellent choice. Our PHP experts deliver high-quality code that ensures secure and scalable websites and web applications.
Why Choose GMU?
Experienced Developers
Our developers bring a wide range of expertise across various technologies and industries.
Competitive Pricing
We offer attractive rates without compromising on quality. Great results don’t have to come with a high price tag.
Ready to Start
Our developers are ready to jump in right away, so your project can move forward without delay.
We’re in the Top 10% fastest growing digital marketing manager agencies
That’s according FD Gazellen, We’re also proud to be an official Google Ads Partner & Meta Business Partner.
Accelerate your business growth with expert digital marketing strategies tailored to your goals. From impactful ads and engaging content marketing to a customized marketing plan, our team of seasoned marketing consultants and managers deliver measurable results.
Let us craft your winning online marketing approach and boost your ROI
Top 10% fastest growing, we know how it works
20+ years in the business
Google Ads Partner
Meta Business Partner
Direct SEO acces to 180.000 Blogs & Newspapers
Perhaps that’s why our clients achieve an average ROI of 9.5x Or why we maintain a 98% retention rate.Either way, the results speak for themselves.
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Alexander
What impressive numbers we're achieving for you right now! This truly makes us extremely happy! 😊
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Remco
“Collaborating with an external partner is always exciting, but luckily the team at GMU guided us extremely well in our choices and handled a lot of work...”
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Maxim
Nearly 10,000 turnover, 100 bookings and an average cost of €19.91 per booking. These are the numbers that make us smile. Thanks for all the efforts so far and hopefully we can increase sales even more in the coming period! MU has been assisting us with online marketing, SEO, and SEA. They contribute well to our strategy
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Superlease
"For a number of years, GMU has been helping us with online marketing, SEO and SEA. They contribute well to strategy, the lines of communication are short and they know their stuff. Great!"
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Chantal
"GMU is an innovative online marketing agency that thinks along with you. The various disciplines work well together to provide you with the best possible service in the field of SEA, SEO and retargeting. The young team is easily accessible and thinks along with you to generate the best result within google"
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Rob
"In the past, several marketing agencies have worked for Google Adwords and organic SEO, but with varying results. I've been a satisfied customer at GMU.ONLINE for 5 years now. Extraordinary knowledge, short lines of communication and strong communication. Handy if you, as an entrepreneur, have little time to delve into the ads and associated results. You can really trust this party, every goal I set is exceeded by 200%. This has resulted in considerable growth for our company. Highly recommended this company!"
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Floor
“GMU has completely exceeded our expectations. They consistently meet and exceed the intended goals. As e-commerce specialists, they know exactly what works. Additionally, their app offers full insight into the results, so we always know how our ads are performing”
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Edaine
“I would recommend GMU's services to everyone. Through their personal approach and professional way of thinking, my website achieved great improvements within a few months.”
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Adam
“I've worked with various agencies for SEO and SEA in the past. I've been a client with GMU for 3 years now and am still very satisfied. They have a lot of knowledge, keep things efficient, and the communication is always pleasant.”
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Daphne
“A professional company that quickly understands your needs and places your organization at the top of Google through labor-intensive actions. A good investment.”
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Max
“A great company in online marketing that really thinks along with you. Communication is excellent, and their Big Data system provides great insights that lead to excellent returns.”
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Diederik
"I would recommend GMU's services to everyone. Thanks to the personal approach and professional way of thinking, my website has undergone a huge positive change in a few months. The positive results are clearly visible in the growing number of website visitors. With the help of GMU, we can make the most of our online growth opportunities.to make products easier to find for a wider audience."
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Bob
"What impressive numbers we're achieving for you right now! This truly makes us extremely happy! 😊"
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Best Fightshop
“Collaborating with an external partner is always exciting, but luckily the team at GMU guided us extremely well in our choices and handled a lot of work...”
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Marc
"GMU has been assisting us with online marketing, SEO, and SEA for several years. They make a strong contribution to our strategy"
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Eva
"Innovative company that is close to the customer and proactively thinks along with you. Nice personal approach, know what they're talking about and they take the time for you."
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Bart
"Good personal contact, knowledge of the business and the market. Always thinking in terms of solutions. Highly recommended!"
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Remarkt
"Big Data system that ensures the best possible return. Definitely recommended!"
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Simon
"This party lives up to what they promise. Good personal communication."
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BeriVita
“A young company with professional and super-friendly staff. They prioritize the specific needs of their clients, and communication is always clear and quick. In short, GMU Online provides excellent service. Highly recommended if you want to grow your business!”
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Tom
"Nice cooperation with good service. Great company! Fulfills the agreements."
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Marcel
"Very satisfied with the service and people are also well advised during the corona crisis."
